EP0147629A1 - Disjoncteur de protection - Google Patents

Disjoncteur de protection Download PDF

Info

Publication number
EP0147629A1
EP0147629A1 EP84114175A EP84114175A EP0147629A1 EP 0147629 A1 EP0147629 A1 EP 0147629A1 EP 84114175 A EP84114175 A EP 84114175A EP 84114175 A EP84114175 A EP 84114175A EP 0147629 A1 EP0147629 A1 EP 0147629A1
Authority
EP
European Patent Office
Prior art keywords
lever
switch
circuit breaker
handle
pivot lever
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Granted
Application number
EP84114175A
Other languages
German (de)
English (en)
Other versions
EP0147629B1 (fr
Inventor
Udo Geus
Hajo Dipl.-Ing. Lindner
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Lindner Fabrik Elektrischer Lampen und Apparate GmbH
Original Assignee
Lindner Fabrik Elektrischer Lampen und Apparate GmbH
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Priority claimed from DE19833347097 external-priority patent/DE3347097A1/de
Application filed by Lindner Fabrik Elektrischer Lampen und Apparate GmbH filed Critical Lindner Fabrik Elektrischer Lampen und Apparate GmbH
Priority to AT84114175T priority Critical patent/ATE25789T1/de
Publication of EP0147629A1 publication Critical patent/EP0147629A1/fr
Application granted granted Critical
Publication of EP0147629B1 publication Critical patent/EP0147629B1/fr
Expired legal-status Critical Current

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Classifications

    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
    • H01H71/00—Details of the protective switches or relays covered by groups H01H73/00 - H01H83/00
    • H01H71/10—Operating or release mechanisms
    • H01H71/50—Manual reset mechanisms which may be also used for manual release
    • H01H71/52—Manual reset mechanisms which may be also used for manual release actuated by lever
    • H01H71/526—Manual reset mechanisms which may be also used for manual release actuated by lever the lever forming a toggle linkage with a second lever, the free end of which is directly and releasably engageable with a contact structure

Definitions

  • the invention relates to a manually operable circuit breaker with the features of the preamble of claim 1.
  • a switch is known from DE-PS 25 04 954 and has a lock which can be locked and unlocked by a handle designed as a rotary knob and on which a magnet and / or bimetallic release device acts.
  • the switching lock in turn essentially consists of two levers, namely a pivot lever and a release lever cooperating with it, both of which are mounted on a common axis of rotation fixed to the housing and can be pivoted about this, the pivot lever for transmitting the pivoting movement of the handle to an elastically coupled to it, is provided in the switch housing pivotable and interacting with a fixed contact movement contact arm.
  • the unlatching lever is actuated by the release devices and has at one end a latching point which serves to guide or release a transmission slide which acts as a knee joint and which transmits the force between the handle and the switching mechanism.
  • a hook-like projection on the unlatching lever engages over the transmission slide, which is designed as a wire bracket, and fixes it to a sloping surface of the pivoting lever, which is used for power transmission.
  • the pivoting lever and the unlatching lever move coaxially, so that the latching of the wire bracket end over the hook-like projection remains unchanged. If the release lever is rotated about the axis common to the two levers by means of a release device, the end of the wire bracket on the switch lock side is released so that it slides over the sliding inclined surface attached to the swivel lever, thereby rendering the support ineffective and the switch lock jumping into the off position.
  • the switching lock is therefore extremely sensitive to the smallest manufacturing tolerances, which unintentionally shift the compromise found between necessary, secure locking and easy triggering in one direction or the other.
  • the invention has for its object to provide a circuit breaker such that the latch between the transmission element interacting with the handle and the switch lock securely latches at the start of a switch-on pivoting movement without adversely affecting the speed of the unlatching, all parts being simple to manufacture and install should be. This object is achieved by the characterizing features of claim 1.
  • the unlatching lever carries out a rotary and sliding movement in the housing, which means that the latching element, which is designed as a locking lug, protrudes far beyond the path of movement of the transmission bracket end to be latched at the beginning of the pivoting movement, but withdraws more and more from the path of movement during the pivoting movement , so that the mutual overlap causing the latching is reduced to a necessary minimum at the end of the switch-on pivoting movement, ie in the switch-on position.
  • a further retraction movement of the locking lug, which ultimately causes the switch to be triggered, is exclusively caused by the release elements (magnetic release, bimetallic release), which acts on the free end of the latching lever, which is designed as a single-arm lever, and rotates it further about its bearing axis arranged on the pivot lever.
  • the critical area of coverage of the elements to be mutually latched is thus only established immediately before or when the switch-on position is reached.
  • the end of the transmission bracket to be latched is always securely guided in a longitudinal groove of the pivoting lever, so that additional transmission elements acting on the transmission bracket, e.g. Feathers and the like can be dispensed with entirely, which lead to an additional mechanical load on the latching area.
  • the sequence of movements during the switch-off pivoting movement has the advantage over the prior art that the pivoting movement of the switch lock can jump to the switch-off position unhindered from the time of unlatching, which leads to a conceivably short tripping time of the circuit breaker and is particularly advantageous in the case of short-circuit disconnections.
  • the switching behavior of the circuit breaker is further improved in that, according to claim 2, the contact arm is mounted exclusively on the pivot lever. Additional drive-transmitting means can be completely dispensed with, the contact arm is guided in synchronism with the initial switch-on swivel movement of the swivel lever to the mating contact fixed to the housing and is already there under high contact pressure during the further transfer of the handle to the switch-on position.
  • the contact arm has an L-shaped angle bend at its fastening end, the end of which is articulated to the pivot lever by positive locking and the inside of the angle is acted upon by a compression spring in the direction of the pivot lever.
  • a compression spring in the direction of the pivot lever.
  • Self-cleaning of the contact surfaces is achieved by a sliding process that takes place between the fixed contact and the contact arm during the last swivel-in phase.
  • this is due to the fact that the contact arm not only rotates, but also rotates and rotates in the housing when it is lifted out of its form-fitting bed in the swivel lever.
  • a possibly welded contact point is not only torn open in the direction of movement of the contact arm during this movement sequence, but is also additionally broken open by the shear force acting transversely to the direction of movement.
  • the sliding inclined surface according to claim 7 ensures that the handle is not unnecessarily inhibited during its return movement into the switch-off position.
  • Claim 8 teaches a particularly advantageous "critical" end position of the locking lug in relation to the longitudinal groove in the pivot lever which defines the path of movement of the transmission bracket.
  • the projecting web fulfills a double function, since it also serves as a counter bearing for a torsion spring that presses the unlatching lever against the housing-fixed contact projection.
  • Claims 11 and 12 teach a particularly advantageous arrangement of the parts interacting with the switch lock in relation to other switch parts, with claim 14 a quick return of the handle to the switch-off / release position to display the respective switching state is achieved.
  • the circuit breaker 1 consists essentially of a switch housing 2, from the upper side 3 of which a handle 4, designed as a rotary lever, projects for manual actuation of the circuit breaker.
  • the circuit breaker 1 In its interior 5, the circuit breaker 1 has a switch lock 6, which is arranged directly under the top 3 of the switch housing 2.
  • a magnetic release device 7 and a bimetal release device 8 are provided.
  • connection elements in the form of screw terminals 9, 10 being electrically connected to the bimetallic release device 8 and the screw terminal 10 being connected to the magnetic release device 7.
  • the swivel end 12 of the bimetallic trip device 8 is connected to a (movement) contact arm 13, which cooperates electrically with a fixed contact 14, which in turn is electrical with the magnetic trip device 7, via a wire 11, with which the arc guide plate (39) is electrically and mechanically connected connected is.
  • the closed current path thus runs from the screw terminal 9 via the bimetal release device 8, the stranded wire 11, the contact arm 13, the fixed contact 14, the magnetic release device 7 to the screw terminal 10.
  • the switching lock 6 In order to control the movement of the contact arm 13, it is attached to the switching lock 6 with its fastening end 15.
  • This consists in particular of a pivot lever 17 rotatably mounted in the switch housing 2 by means of an axis 16 and a separately mounted release lever 18.
  • the latter is mounted on the pivot lever 17 at a distance from its axis 16 by means of a separate pivot axis 19 and forms a two-link chain with the pivot lever 17.
  • a torsion spring 20 guided around the axis of rotation 19 a counterclockwise torque is exerted on the unlatching lever 18 opposite the pivoting lever 17.
  • the unlatching lever 18 is supported by means of a web 21 on a contact projection 22 which protrudes from the side wall of the housing against the switching mechanism 6.
  • a latching point in the form of a detent 24 protruding upwards from the unlatching lever 18, on which the latch 25 side of a transmission bracket 26, which is fastened with its second end 27 to the interior area of the handle 4 in such a way, that it is guided around the axis 28 of the handle 4 when it is pivoted and, in the switched-on position together with the inner part of the handle 4, forms a toggle lever which is locked beyond the dead center.
  • the switch lock end 25 of the transmission bracket is guided in a longitudinal groove 29 of the pivot lever 17 during the switch-on, switch-off and release movement.
  • the magnetic and bimetallic release devices 7, 8 act on the lower end 30 of the unlatching lever 18 designed as a one-armed lever, a plunger 31 of the magnetic release device 7 acting directly on the lower end and the movement of the pivoting end 12 of the bimetallic release device 8 by means of a connecting slide 32 lower end 30 of the release lever 18 is transmitted.
  • the fastening end 15 of the contact arm 13 is provided with an L-shaped bend 33 which is pressed into a form-fitting recess 35 of the pivot lever 17 by means of a compression spring 34.
  • an extinguishing chamber antechamber 36 is provided which is on one side of an extinguishing chamber 37 is limited.
  • An arc guide plate 39 leads from the underside 38 of the quenching chamber 37 in the direction of the switch lock and forms a stop 40 for the contact arm 13 which is in the release position
  • An adjusting device 42 provided with an adjusting screw 41 is used to adjust the bimetallic release device 8.
  • the handle 4 In the switched-off position shown in FIG. 1, the handle 4 is in a position tilted to the left, as a result of which the transmission bracket 26 is retracted to the right relative to the latching lug 24. In this initial position, the locking lug 24 completely covers the width of the longitudinal groove 29, so that when the locking lug 24 is acted upon by the end 25 of the transmission bracket 26, a secure latching occurs. If the handle 4 is brought into the switch-on position (via the middle position shown in FIG. 2 to the end position shown in FIG. 3), the following movements take place in the switch lock:
  • the contact arm 13 is already in contact with the fixed contact 14. In this contact position, it performs a downward sliding rotary movement around the end of the L-shaped bend 33, which is supported at the corresponding point in the form-fitting recess 35.
  • the further the handle is pivoted into the switch-on position the more the L-shaped bend or the fastening end 15 of the contact arm 13 lifts out of the form-fitting recess against the force of the spring 34, which results in the downward rotating sliding movement.
  • a contact cleaning is carried out by mutual sliding action between the contact arm 13 and the silver-plated contact surface of the fixed contact 14.
  • the second end 27 of the transmission bracket 26 has migrated beyond the straight connecting line (dead center line) between the center of the axis 28 and the end 25 and thus exerts a clockwise torque on the handle, which is caused by the force the compression spring 34 is generated via the latching point (locking lug 24).
  • the detent 24 is the end 25 of the transfer strap 26 free so that it a sudden snap-back of the two levers (pivoted lever 17, release lever 1 8) comes and the switch contact surface between Contact arm 13 and fixed contact 14 is torn open. A resulting arc is dissipated into the quenching chamber 37 via the arc guide plate 39. Due to the prevailing spring forces of the springs 34 and a further torsion spring 44 located in the handle 4, the switching lock 6 will return to its switch-off position in time before the handle 4. The handle 4, which rotates somewhat more slowly, pulls the transmission bracket 26 back into the switched-off position, its end 25 sliding over a sliding inclined surface 43 on the rear side of the locking lug 24 and pressing it briefly downward against the force of the torsion spring 20.

Landscapes

  • Breakers (AREA)
EP84114175A 1983-12-17 1984-11-23 Disjoncteur de protection Expired EP0147629B1 (fr)

Priority Applications (1)

Application Number Priority Date Filing Date Title
AT84114175T ATE25789T1 (de) 1983-12-17 1984-11-23 Schutzschalter.

Applications Claiming Priority (4)

Application Number Priority Date Filing Date Title
DE3345699 1983-12-17
DE3345699 1983-12-17
DE19833347097 DE3347097A1 (de) 1983-12-27 1983-12-27 Schutzschalter
DE3347097 1983-12-27

Publications (2)

Publication Number Publication Date
EP0147629A1 true EP0147629A1 (fr) 1985-07-10
EP0147629B1 EP0147629B1 (fr) 1987-03-04

Family

ID=25816525

Family Applications (1)

Application Number Title Priority Date Filing Date
EP84114175A Expired EP0147629B1 (fr) 1983-12-17 1984-11-23 Disjoncteur de protection

Country Status (3)

Country Link
EP (1) EP0147629B1 (fr)
DE (1) DE3462562D1 (fr)
GR (1) GR81242B (fr)

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2589627A1 (fr) * 1985-10-31 1987-05-07 Merlin Gerin Mecanisme de commande pour disjoncteur electrique a basse tension
EP0255483A2 (fr) * 1986-07-25 1988-02-03 Weber Ag Mécanisme de commutation d'un interrupteur de protection
EP0708461A1 (fr) * 1994-10-18 1996-04-24 Bticino S.P.A. Disjoncteur automatique à haute performance
DE10037924B4 (de) * 1999-08-04 2005-12-22 Fuji Electric Co., Ltd., Kawasaki Unterbrechermechanismus für Schaltautomaten
CN109509689A (zh) * 2017-09-14 2019-03-22 浙江正泰电器股份有限公司 开关电器的操作机构

Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE7500060U (de) * 1975-01-03 1975-05-22 Boshof R Leitungsschutzschalter in Schmalbauweise und niedriger Bauart
DE2504954A1 (de) * 1975-02-06 1976-08-26 Kopp Fa Heinrich Mechanisches sprungwerk fuer hochleistungs-selbstschalter
DE3038511A1 (de) * 1980-10-11 1982-06-03 Ellenberger & Poensgen Gmbh, 8503 Altdorf Ueberstromschutzschalter
FR2503930A1 (fr) * 1981-04-11 1982-10-15 Licentia Gmbh Declencheur a minimum de tension pour disjoncteurs de puissance
DE3226820A1 (de) * 1981-08-13 1983-07-14 Kombinat Veb Keramische Werke Hermsdorf, Ddr 6530 Hermsdorf Leitungsschutzschalter in schmalbauweise

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE7500060U (de) * 1975-01-03 1975-05-22 Boshof R Leitungsschutzschalter in Schmalbauweise und niedriger Bauart
DE2504954A1 (de) * 1975-02-06 1976-08-26 Kopp Fa Heinrich Mechanisches sprungwerk fuer hochleistungs-selbstschalter
DE3038511A1 (de) * 1980-10-11 1982-06-03 Ellenberger & Poensgen Gmbh, 8503 Altdorf Ueberstromschutzschalter
FR2503930A1 (fr) * 1981-04-11 1982-10-15 Licentia Gmbh Declencheur a minimum de tension pour disjoncteurs de puissance
DE3226820A1 (de) * 1981-08-13 1983-07-14 Kombinat Veb Keramische Werke Hermsdorf, Ddr 6530 Hermsdorf Leitungsschutzschalter in schmalbauweise

Cited By (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2589627A1 (fr) * 1985-10-31 1987-05-07 Merlin Gerin Mecanisme de commande pour disjoncteur electrique a basse tension
EP0224396A1 (fr) * 1985-10-31 1987-06-03 Merlin Gerin Mécanisme de commande pour disjoncteur électrique à basse tension
US4740770A (en) * 1985-10-31 1988-04-26 Merlin Gerin Operating mechanism for a low voltage electrical circuit breaker
EP0255483A2 (fr) * 1986-07-25 1988-02-03 Weber Ag Mécanisme de commutation d'un interrupteur de protection
EP0255483A3 (en) * 1986-07-25 1989-12-13 Weber Ag Switching mechanism of a protective switch
EP0708461A1 (fr) * 1994-10-18 1996-04-24 Bticino S.P.A. Disjoncteur automatique à haute performance
DE10037924B4 (de) * 1999-08-04 2005-12-22 Fuji Electric Co., Ltd., Kawasaki Unterbrechermechanismus für Schaltautomaten
CN109509689A (zh) * 2017-09-14 2019-03-22 浙江正泰电器股份有限公司 开关电器的操作机构
CN109509689B (zh) * 2017-09-14 2024-03-26 浙江正泰电器股份有限公司 开关电器的操作机构

Also Published As

Publication number Publication date
DE3462562D1 (en) 1987-04-09
GR81242B (en) 1985-04-16
EP0147629B1 (fr) 1987-03-04

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